I spent two years in the early 70s in the UK while in the Air Force.

Beers there (and then) were generally served at "cellar" temperature, about 55-58 degree F. This was usually attained without refrigeration. Most Americans at the time considered this "warm," though certainly not room temperature.

It's my understanding that things are generally served colder now... I even hear that Budweiser sells well in London.

Steve